Gaya APA
Hanna, A, N. (2007).
Test Methods for Characterizing Aggregate Shape, Texture, and Angularity .
Washington:
TRB.
Gaya MLA
Hanna, Amir, N..
"Test Methods for Characterizing Aggregate Shape, Texture, and Angularity".
Washington:
TRB,
2007.
Text.